SPECTRA PRECISION FOCUS 2 SERIES TOTAL STATION USER GUIDE
7 –
Checking and Adjustment
134
Adjusting the electronic level
Adjustment of the electronic level is done by Zero point errors of vertical scale and horizontal angle
corrections. For detailed instruction, please see page 135.
Checking and adjusting the circular level
Once you have checked and adjusted the electronic level, check the circular level.
If the bubble is not in the center of the level, use the adjusting pin to rotate the three adjustment
screws of either circular level on the instrument main body or tribrach until the bubble is centered.
Checking and adjusting the optical plummet
The optical axis of the plummet must be aligned with the vertical axis of the instrument.
To check and adjust the optical plummet:
1. Place the instrument on the tripod. You do not have to level the instrument.
2. Place a thick sheet of paper marked with an X on the ground below
the instrument.
While you are looking through the optical plummet, adjust the
leveling screws until the image of the X is in the center of the reticle
mark
.
3. Rotate the alidade 180°.
If the marked image is in the same position in the center of the
reticle mark, no adjustment is required.
4. If the image is not in the same position, adjust the optical plummet:
a. Use the supplied hexagonal wrench to turn the adjustment
screws until the image of the X is in Position P. Position P is the
center point of the line connecting the X and the center of the reticle mark
.
b. Repeat from Step 2.
P
